Is covariance information useful in estimating vision parameters?

Michael J. Brooks; Wojciech Chojnacki; Darren Gawley; Anton van den Hengel

doi:10.1117/12.410875

22 December 2000 Is covariance information useful in estimating vision parameters?

Michael J. Brooks; Wojciech Chojnacki; Darren Gawley; Anton van den Hengel

Author Affiliations +

Proceedings Volume 4309, Videometrics and Optical Methods for 3D Shape Measurement; (2000) https://doi.org/10.1117/12.410875
Event: Photonics West 2001 - Electronic Imaging, 2001, San Jose, CA, United States

Abstract

This paper assesses some of the practical ramifications of recent developments in estimating vision parameters given information characterizing the uncertainty of the data. This uncertainty information may sometimes be estimated in association with the observation process, and is usually represented in the form of covariance matrices. An empirical study is made of the conditions under which improved parameter estimates can be obtained from data when covariance information is available. We explore, in the case of fundamental matrix estimation and conic fitting, the extent to which the noise should be anisotropic and inhomogeneous if improvements over traditional methods are to be obtained. Critical in this is the devising of synthetic experiments under which noise conditions can be precisely controlled. Given that covariance information is, in itself, subject to estimation error, testes are also undertaken to determine the impact of imprecise covariance information upon the quality of parameter estimates. We thus investigate the consequences for parameter estimation of inaccuracies in the characteristiziaton of noise that inevitably arise in practical computation.

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Michael J. Brooks, Michael J. Brooks, Wojciech Chojnacki, Wojciech Chojnacki, Darren Gawley, Darren Gawley, Anton van den Hengel, Anton van den Hengel, } "Is covariance information useful in estimating vision parameters?", Proc. SPIE 4309, Videometrics and Optical Methods for 3D Shape Measurement, (22 December 2000); doi: 10.1117/12.410875; https://doi.org/10.1117/12.410875

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